O5
G91G28Z0
T1M6
G54G17G40G49G90G80
M3S2000
G43G1Z100H1F2000
X0Y0
Z5
#1=0
N10 #1=#1+5
G1Z-#1F500
G41G1X-10Y10D4
G3X-20Y0R10
G1Y-20,R10
X20,R10
Y20,R10
X-20,R10
Y0
G3X-10Y-10R10
G1G40X0Y0
IF[#1LT5]GOTO10
G43G1Z100F2000
M5
M99